CN106555152A - A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer - Google Patents
A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer Download PDFInfo
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- CN106555152A CN106555152A CN201611034521.4A CN201611034521A CN106555152A CN 106555152 A CN106555152 A CN 106555152A CN 201611034521 A CN201611034521 A CN 201611034521A CN 106555152 A CN106555152 A CN 106555152A
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- powder
- plasma spraying
- aluminium base
- resistive layer
- preparation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
Abstract
The invention discloses a kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer, which comprises the following steps that：The aluminium base of a, cleaning with dielectric layer；B, aluminium base is positioned in plasma spraying equipment and running parameter is set；C, by thermo electric material powder spray in the surface of dielectric layer, to form resistive layer, thermo electric material powder by tungsten powder, molybdenum powder, niobium powder, nickel by powder, tungsten alloy powder, molybdenum alloy powder, niobium alloy powder, Ni alloy powder in a kind of or at least two mixed-powders for constituting.The preparation method has advantages below：1st, realize and prepare resistive layer on aluminum substrates, solve the technology restriction that noble metal thick film thermo electric material can not be sintered on aluminum substrates, alleviate the weight of electrothermal device, reduce material cost；2nd, using base metal electric heating powder direct spraying one-shot forming, tens times of material cost is reduced, and effectively increases production efficiency and product percent of pass.
Description
Technical field
The present invention relates to thermo electric material technical field, more particularly to a kind of plasma spraying aluminium base electrothermal device resistive layer
Preparation method.
Background technology
Plasma spraying is to adopt rigidity plasma arc for thermal source, the heat spraying method based on dusty spray material, etc.
Ion arc is the abbreviation of plasma arcs；Plasma refers to that gas is partly or entirely ionized under superelevation temperature state, is formed
Negative ions（Electronics）Quantity is equal and entirety is in electroneutral electric conductor.Electric arc is plasma in itself, but only works as electric arc
Compressed by thermal pinch, from magnetic compression effect, mechanical compress effect, when becoming the compression arc with higher temperature,
Just it is referred to as plasma arcs, its central temperature can reach 10000 DEG C -50000 DEG C, and so high temperature makes all of metal and pottery
Ceramic material can be sprayed.
Need to be explained further, plasma spraying technology has been widely used in space technology, and gradually start to answer
For automobile, the advantage of this technology is good heat-insulation effect, can bear high temperature and high pressure, technical maturity, steady quality；Be up to
To the target of low heat emission, ceramic spraying, the such as zirconium oxide of piston top spray, the oxygen of cylinder sleeve spray can be carried out to engine chamber part
Change zirconium etc., radiation loss can be reduced, mitigated engine sole mass, reduced engine chi through the engine of this process
Very little, reduction fuel consumption.With the progress of technology, it is each that plasma spraying technology will widely be applied to each row
Industry.
It should further be noted that existing thick-film electric heater part dielectric layer is mainly in stainless steel substrate, ceramic base material, glass baseplate
It is upper to be completed by silk-screen repeatedly/sintered glass glaze, low production efficiency, high cost, and product defects is difficult to control to, material is selected
Select be limited in scope, performance is difficult to be lifted.
The content of the invention
Present invention aims to the deficiencies in the prior art and a kind of plasma spraying aluminium base electrothermal device is provided
The preparation method of resistive layer, the preparation method of the plasma spraying aluminium base electrothermal device resistive layer adopt plasma spraying technology
Existing thick film electric resistance layer preparation technology is substituted, noble silver, palladium, ruthenium, platinum and its conjunction are replaced using base metal thermo electric material
Gold and its compound, and the resistance for preparing electrothermal device on aluminum substrates is realized by spraying base metal thermo electric material powder
Layer, the i.e. present invention have advantages below, specially：1st, realize and prepare resistive layer on aluminum substrates, solve noble metal thick film
The technology restriction that thermo electric material can not be sintered on aluminum substrates, alleviates the weight of electrothermal device, reduces material cost；2nd, adopt
With base metal electric heating powder direct spraying one-shot forming, tens times of material cost is reduced, and is effectively improved production efficiency
With the qualification rate of product.
To reach above-mentioned purpose, the present invention is realized by below scheme.
A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer, includes following processing step, specifically
For：
A, will carry dielectric layer aluminium base cleaning；
B, will be positioned in plasma spraying equipment with the aluminium base of dielectric layer, the work ginseng of plasma spraying equipment is set
Number；
C, start plasma spraying equipment and by thermo electric material powder spray in the surface of dielectric layer, to form resistive layer, electric heating
Material powder is tungsten powder, molybdenum powder, niobium powder, nickel by powder, tungsten alloy powder, molybdenum alloy powder, niobium alloy powder, nickel alloy
A kind of or at least two mixed-powders for being constituted in powder.
Wherein, the aluminium base is fine aluminium base material or aluminum alloy base material.
Wherein, the particle size values of the thermo electric material powder are 0.5-50 μm.
Wherein, the running parameter of the plasma spraying equipment is：Power output 200w-400kw, sprays powder feeding pressure
0.1-5MPa, powder pushing precision ± 0.1- ± 1%, powder sending quantity 0-0.5kg/min.
Wherein, the plasma spraying equipment is constituted using nitrogen, argon gas, a kind of in helium or at least two
Mixed gas are protected.
Wherein, the thickness of the resistive layer is 5-100 μm.
Wherein, the heating temperature range of the resistive layer：25-500℃；Electricity asks coefficient：＜ 10%；Adhesive force 5-30MPa；
Thermal shock resistance properties：500 DEG C of water quenchings（20 DEG C of water temperature）5 times, micro- sem observation flawless.
Beneficial effects of the present invention are：A kind of system of plasma spraying aluminium base electrothermal device resistive layer of the present invention
Preparation Method, which includes following processing step：A, will carry dielectric layer aluminium base cleaning；B, will carry dielectric layer aluminium
Base material is positioned in plasma spraying equipment, arranges the running parameter of plasma spraying equipment；C, startup plasma spraying equipment
And by thermo electric material powder spray in the surface of dielectric layer, to form resistive layer, thermo electric material powder be tungsten powder, molybdenum powder,
One kind or at least two in niobium powder, nickel by powder, tungsten alloy powder, molybdenum alloy powder, niobium alloy powder, Ni alloy powder
The mixed-powder for being constituted.The preparation method of the plasma spraying aluminium base electrothermal device resistive layer adopts plasma spraying technology
Existing thick film electric resistance layer preparation technology is substituted, noble silver, palladium, ruthenium, platinum and its conjunction are replaced using base metal thermo electric material
Gold and its compound, and the resistance for preparing electrothermal device on aluminum substrates is realized by spraying base metal thermo electric material powder
Layer, the i.e. present invention have advantages below, specially：1st, realize and prepare resistive layer on aluminum substrates, solve noble metal thick film
The technology restriction that thermo electric material can not be sintered on aluminum substrates, alleviates the weight of electrothermal device, reduces material cost；2nd, adopt
With base metal electric heating powder direct spraying one-shot forming, tens times of material cost is reduced, and is effectively improved production efficiency
With the qualification rate of product.
Specific embodiment
With reference to specific embodiment, the present invention will be described.
A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer, includes following processing step, specifically
For：
A, the aluminium base cleaning that dielectric layer will be carried, wherein, aluminium base is fine aluminium base material or aluminum alloy base material；
B, will be positioned in plasma spraying equipment with the aluminium base of dielectric layer, the work ginseng of plasma spraying equipment is set
Count, concrete action parameter is：Power output 200w-400kw, spraying powder feeding pressure 0.1-5MPa, powder pushing precision ± 0.1- ± 1%,
Powder sending quantity 0-0.5kg/min；
C, start plasma spraying equipment and by thermo electric material powder spray in the surface of dielectric layer, to form resistive layer, resistance
The thickness of layer is 5-100 μm, and thermo electric material powder is tungsten powder, molybdenum powder, niobium powder, nickel by powder, tungsten alloy powder, molybdenum alloy
A kind of or at least two mixed-powders for being constituted in powder, niobium alloy powder, Ni alloy powder, thermo electric material powder
Particle size values are 0.5-50 μm.
Wherein, the plasma spraying equipment is constituted using nitrogen, argon gas, a kind of in helium or at least two
Mixed gas are protected.
It should further be noted that the heating temperature range of the resistive layer：25-500℃；Electricity asks coefficient：＜ 10%；Adhesive force
5-30MPa；Thermal shock resistance properties：500 DEG C of water quenchings（20 DEG C of water temperature）5 times, micro- sem observation flawless.
Below with a specific example come to the present invention preparation method be described in detail, specially：1st, will be with Jie
The fine aluminium base material cleaning of the 100*100*10mm of matter layer；2nd, by power be 30kw, powder feeding pressure be 0.5MPa, powder feeding stream
The plasma spraying equipment for 50g/min, powder pushing precision 0.1% is measured, by Ni30Cr70 powder sprays that granularity is 15 μm in aluminium base
On material dielectric layer, resistive layer thickness is 30 μm, and sheet resistance is 60 Ω/；TCR is 50ppm/ DEG C；Thermal shock resistance properties：500 DEG C of water quenchings
（20 DEG C of water temperature）5 times, micro- sem observation flawless.
Designed by above-mentioned processing step, the preparation method of the plasma spraying aluminium base electrothermal device resistive layer of the present invention
Existing thick film electric resistance layer preparation technology is substituted using plasma spraying technology, noble metal is replaced using base metal thermo electric material
Silver, palladium, ruthenium, platinum and its alloy and its compound, and realized on aluminum substrates by spraying base metal thermo electric material powder
The resistive layer of electrothermal device is prepared, i.e., the present invention has advantages below, specially：1st, realize and prepare resistance on aluminum substrates
Layer, solves the technology restriction that noble metal thick film thermo electric material can not be sintered on aluminum substrates, alleviates the weight of electrothermal device,
Reduce material cost；2nd, using base metal electric heating powder direct spraying one-shot forming, tens times of material cost is reduced, and is had
The qualification rate of production efficiency and product is improve effect.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, will change in specific embodiments and applications, and this specification content is should not be construed as to the present invention
Restriction.
Claims (7)
1. a kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer, it is characterised in that include following technique
Step, specially：
A, will carry dielectric layer aluminium base cleaning；
B, will be positioned in plasma spraying equipment with the aluminium base of dielectric layer, the work ginseng of plasma spraying equipment is set
Number；
C, start plasma spraying equipment and by thermo electric material powder spray in the surface of dielectric layer, to form resistive layer, electric heating
Material powder is tungsten powder, molybdenum powder, niobium powder, nickel by powder, tungsten alloy powder, molybdenum alloy powder, niobium alloy powder, nickel alloy
A kind of or at least two mixed-powders for being constituted in powder.
2. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The aluminium base is fine aluminium base material or aluminum alloy base material.
3. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The particle size values of the thermo electric material powder are 0.5-50 μm.
4. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The running parameter of the plasma spraying equipment is：Power output 200w-400kw, sprays powder feeding pressure 0.1-5MPa,
Powder pushing precision ± 0.1- ± 1%, powder sending quantity 0-0.5kg/min.
5. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The plasma spraying equipment is using a kind of or at least two mixed gas for being constituted in nitrogen, argon gas, helium
Protected.
6. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The thickness of the resistive layer is 5-100 μm.
7. the preparation method of a kind of plasma spraying aluminium base electrothermal device resistive layer according to claim 1, its feature
It is：The heating temperature range of the resistive layer：25-500℃；Electricity asks coefficient：＜ 10%；Adhesive force 5-30MPa；Thermal impact
Energy：500 DEG C of water quenchings（20 DEG C of water temperature）5 times, micro- sem observation flawless.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034521.4A CN106555152A (en) | 2016-11-23 | 2016-11-23 | A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer |
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| CN201611034521.4A CN106555152A (en) | 2016-11-23 | 2016-11-23 | A kind of preparation method of plasma spraying aluminium base electrothermal device resistive layer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1918945A (en) * | 2004-01-06 | 2007-02-21 | 沃特洛电气制造公司 | Combined material layering technologies for electric heaters |
| CN101682936A (en) * | 2007-06-30 | 2010-03-24 | 赫斯基注射器成型系统有限公司 | Spray deposited heater element |
| CN104488074A (en) * | 2012-07-03 | 2015-04-01 | 华特隆电器制造公司 | Composite substrate for layered heaters |
-
2016
- 2016-11-23 CN CN201611034521.4A patent/CN106555152A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1918945A (en) * | 2004-01-06 | 2007-02-21 | 沃特洛电气制造公司 | Combined material layering technologies for electric heaters |
| CN101682936A (en) * | 2007-06-30 | 2010-03-24 | 赫斯基注射器成型系统有限公司 | Spray deposited heater element |
| CN104488074A (en) * | 2012-07-03 | 2015-04-01 | 华特隆电器制造公司 | Composite substrate for layered heaters |
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Application publication date: 20170405 |
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